Steam-boiler.



N0. 637,034. Patented Nov. I4,- I899. M. RINKEL.

STEAM BOILER.

(Application filed my 26, 1899.)

(No'ModaL) WITNESSES: I r %j%% MM W BY n1: uonms PETERS co Puma-Limo"WASHINGTON n. c.

UNITED STATES PATENT OFFICE.

MARTIN RINKEL, OF ASHLEY, INDIANA.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 637,034, dated November14;, 1899.

Application filed May 26, 1899. Serial No. 718,420. (No model.)

To ctZZ whom) it may concern.-

Be it known that I, MARTIN RINKEL, a citizen of the United States,residing at Ashley, in the county of Steuben and State of Indiana, havein vented new and useful Improvements in Steam-Boilers, of which thefollowing is a specification. Y

My invention relates to vertical water-tube steam-boilers; and itsobject is to provide an improved construction of the same by which Isecure a constant circulation of the water, thus purifying the same andat the same time efiecting a saving in the quantity of fuel consumed.

The invention consists in the novel construction and combination ofparts hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a central vertical section ofa steam-boiler constructed in accordance with my inven tion. Fig. 2 isan elevation of the inner shell of the -boiler disconnected from theouter shell. Fig. 3 is a plan view of the same.

In the said drawings the reference-numeral 1 designates the outer shellof the boiler, to thelower end of which is bolted an inwardly andupwardly extending curved flange 2, which supports the grate-bars 3.Said shell is formed with the usual fuel-opening 4 and door 5. Connectedwith the upper end of the said shell are a smoke-box 6 and stack 7.

The numeral 8 designates the inner section of the boiler, composed ofthree sections 9, 10, and 12, the central section 10 being bolted to theupper and lower sections 9 and 12, respectively. The lower end of thelower section is boltedto the said flange 2, while the upper end of thesection 9 is bolted to a circular plate 13, located. below the top 14:of the outer section 1, and is suspended from the said top by means ofvertical rods 15. The space between said inner and outer shells forms aWater-space, while the upper end of the outer shell serves as a steamand water space or chamber. The numeral 16 designates a steam-pipeconnected with said steam-space, and 17 a manhole-cover. It will be seenthat the saidinner section 10 is in the form of an inverted truncatedcone and is provided with openings 18, communicating with thewater-space between the shells.

Connected with these openings are the curved I lower ends'ofcirculating-pipe 19, which are located within the inner shell. The otheror body portions of said tubes are extended vertically u pward andcommunicate with the water-space above the circular plate 13. The spacebetween said tubes forms a smoke space or chamber for the smoke andunconsumed products of combustion arising from the fire-chamber, andnear the upper end of the section 9 are flues 20, communicating withsaid smoke space or chamber and the smoke box.

The operation is as follows: The space be-- tween the said shells isfilled with water and a fire built on the grate. The heat will ascendand pass around the tubes located in the inner shell, which will rapidlyheat the water and convert it into steam. This will cause the water toconstantly circulate through the tubes and water-space, thus effecting asav ing in fuel consumed and also purifying the water.

It will be seen that the smoke-box 6 is of larger diameter than theboiler, so that there will be a space therebetween, with which the tines19 communicate.

. Having thus fully'described myinvention, what I claim is In a verticalwater-tube steam-boiler, the combination with the outer shell, theinverted truncated comically-shaped steam-chamber at the upper endthereof, and the smoke-box of a greater diameter than that of the casingand fitting over the upper end thereof, of the inner sectional shell,the central portion of which is in the form of an inverted truncatedcone, the circular plate at the upper end of said inner shell, thevertical tubes located in said inner shell having their lower endscurved and communicating with the space between said shells, and thefines at the upper end of said inner shell communicating with thesmoke-box, substantially as described.

In testimony whereof Ihave hereunto set my hand in presence of twosubscribing wit= HGSSGS.

MARTIN RINKEL. Witnesses:

HEZEKIAH THOMAS, FRANK E. WARD.

